I think gym battles should be 2v2 for badges 1-2, 3v3 for badges 3-4, 4v4 for badges 5-6, and 5v5 for badges 7-8
*You and the gym leader are only allowed to use 2 full restores, 1 revive, 1 full heal or something similar to that. This should definitely make gym battles so much more fun and...